QSC SPA4100 Series ENERGY STAR 4 Channel Power Amplifier | Open Box

UPC: 684284068545
Availability: Out of Stock


  • Up to 200 watts per channel into 4 and 8 ohms.
  • ENERGY STAR qualified amplifier.
  • Bridgeable outputs for a higher power.
  • Auto-Ramp provides quiet startup and power-down.
  • Rack-mountable 1U, half-rack width enclosure.

The SPA4-100 four channel amplifier delivers 100 watts RMS per channel into 4 or 8 ohms the four channels can also be bridged in pairs, each pair providing up to 200 watts RMS into 4 or 8 ohms. The SPA4-100 bridged pair channels can be switched into 70V or 100V direct drive mode providing up to 350 watts RMS into a 70V or 100V output; when in 70V or 100V mode the 80Hz high pass filter is automatically engaged.

Efficient Amplifier with Auto-Ramp:

The SPA Series amplifiers utilize a highly efficient class-D design that conserves energy to reduce operational costs and requires no active cooling. They are ENERGY STAR qualified with auto-ramp circuitry that seamlessly transitions

Amplifier Protection: Both amplifiers in the SPA Series feature rms and thermal limiting, as well as protection against overcurrent, short circuit, and under/ overvoltage.

Protection, Control, and Mounting: The SPA Series provides RMS and thermal limiting as well as over-current and short-circuit protection so you can employ them with confidence. They also come with multiple mounting options. Every SPA Series comes with a complete mounting kit allowing it to be rack-mounted by itself or with the second unit in a 1RU space. Included connecting brackets provide additional strength when rack mounting two amps together, but also make for simple under-table or wall mounting (like behind a TV). The SPA Series can also be mounted in plenum spaces when used with the Plenum Kit accessory.

Product Specifications:

Channels: 4

Frequency Response (4Ω and 8Ω): 20 Hz - 20 KHz +/- 0.1 dB

Input Sensitivity: 1.23V (+4 dBu)

Maximum Input Level: 12.3V (+24 dBu)

Cooling: Convection

Output Circuitry: Class D

Dimensions: 1.7” x 8.7” x 9.5” (43 mm x 220 mm x 241 mm)

Net Weight: 3.5 lb (1.1 kg) 4.0 lb (1.4 kg)

More Information
length 15.7
height 3.5
width 11.5
UPC 684284068545
Condition used
Manufacturer Part Number SPA4-100-NA-OB